bc57985306
This adds WASAPI as audio backend on Windows. WASAPI is the modern standard audio API on Windows introduced with Windows Vista. Ref T86590
100 lines
2.3 KiB
C++
100 lines
2.3 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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#ifdef WASAPI_PLUGIN
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#define AUD_BUILD_PLUGIN
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#endif
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/**
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* @file WASAPIDevice.h
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* @ingroup plugin
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* The WASAPIDevice class.
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*/
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#include "devices/SoftwareDevice.h"
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#include <thread>
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#include <windows.h>
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#include <audioclient.h>
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#include <mmdeviceapi.h>
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#include <mmreg.h>
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AUD_NAMESPACE_BEGIN
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/**
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* This device plays back through WASAPI, the Windows audio API.
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*/
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class AUD_PLUGIN_API WASAPIDevice : public SoftwareDevice
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{
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private:
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/**
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* Whether there is currently playback.
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*/
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bool m_playing;
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IMMDeviceEnumerator* m_imm_device_enumerator;
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IMMDevice* m_imm_device;
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IAudioClient* m_audio_client;
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WAVEFORMATEXTENSIBLE m_wave_format_extensible;
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/**
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* The streaming thread.
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*/
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std::thread m_thread;
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/**
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* Starts the streaming thread.
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*/
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AUD_LOCAL void start();
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/**
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* Streaming thread main function.
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*/
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AUD_LOCAL void updateStream();
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// delete copy constructor and operator=
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WASAPIDevice(const WASAPIDevice&) = delete;
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WASAPIDevice& operator=(const WASAPIDevice&) = delete;
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protected:
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virtual void playing(bool playing);
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public:
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/**
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* Opens the WASAPI audio device for playback.
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* \param specs The wanted audio specification.
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* \param buffersize The size of the internal buffer.
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* \note The specification really used for opening the device may differ.
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* \exception Exception Thrown if the audio device cannot be opened.
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*/
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WASAPIDevice(DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);
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/**
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* Closes the WASAPI audio device.
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*/
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virtual ~WASAPIDevice();
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/**
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* Registers this plugin.
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*/
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static void registerPlugin();
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};
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AUD_NAMESPACE_END
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